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~'~ ' <br /> 2.2.4 Taxonomic Considerations <br />~^ <br />..~ Scientific and common names used in this report for <br />--~~ wildlife groups are based on the following sources: Fish - <br /> <br />~ Beckman, 1970; Amphibians and Reptiles - t~aslin, 1959; Eirds - <br />' American Ornithological 'anion, 1973; _iammals - Armstrong, 1972. <br /> 2.3. Fish <br />' No permanent streams or impcundments are found on the <br />~ study site. Two intermittent drainages (Hayden and Dowden <br />, Gulches) drain over S0~ of the study site. Both are trib- <br /> utaries to the East Fork Williams Fork River. The remainder <br />of the site is drained by Watering Trouch Gulch, an inter- <br /> mittent tributary to Dry Creek, which flows north to the Yampz <br /> River. All of these intermittent tributaries are impounded <br /> in several locations to provide stock watering ponds, but <br />~• none of the ponds are on or adjacent to the site. These <br /> ponds are sP,allow, have fluctuating water levels (although <br /> water is usually present year-rour_d), and are subject to <br />._ siltation due to livestock activity .on their shorelines. <br /> Although they mzy provide suitable habitat durinc summer <br /> months for warm water fishes (such as bass, Microoterus spp.; <br />- bluegill, Len_omis spp.; and catfish, Ictalurus spp.), they <br /> are probably subject to winter kills due to heavy ice cover <br />,_ and oxycen deple*_ion. No seasonal fish stocking of these <br />~.~_,- ponds is known or reported. . <br />a <br /> Major nearby streams which provide habitat for running <br /> water fishes include the East Fork of the t4i1'-iams Fork <br />.- River and the Yampa River, approximately four and ten miles <br /> from the site, respectively. The East Fork is rated as <br />~~ excellent for stream fisheries and is dominated by rainbow <br /> trout. The Yzmoz River near its confluence with Dry Creek <br />- is dominated by rough fish and is rated fair for stiezm <br />._ fisheries. <br />~ <br />- The habitats in Dry Creek change radically as the <br />J <br />_ creek flows across farmland near the Yampa River. It is <br /> probably subject to temperature increases, nutrient' <br /> loading, and siltation from the surrounding farms and <br /> ranches. No fish inventories for Dry Creek have been under- <br />' taken. However, the aquatic habitat may be suitable fcr <br /> chubs, Gila spp.; shiners, Notroo_is spp.; and suckers', <br />,a Catostomus spa.; and'other rough ;:ish. <br /> <br />- 2.4 Amphibians and Reptiles <br />U - - <br />No amphibians or reptiles were observed at the study <br />~' _ .. <br />~` -39- <br />